Networking
Table of Content
Networking#
What is a computer network#
A computer network comprises two or more computers that are connected—either by cables (wired) or WiFi (wireless)
Network bazz …#
- LAN
- WAN
- Switch
- Router
- Modem
- ip address
- gateway
- DNS
- DHCP
- services
LAN / WAN#

Modem / Router / Switch#
- Convert to

Router#
wikipedia: A router is a networking device that forwards data packets between computer networks.

- NAT
- Gateway
Switch#
wikipedia: A switch is a device in a computer network that connects other devices together.

All in one#

Cable#

WIFI#

Network commands#
- ping
- ifconfig
Ping#
- ICMP(8) - The Internet Control Message Protocol (ICMP) is a network layer protocol used by network devices to diagnose network communication issues.
Ping: command uses ICMP to send a packet to a remote host and wait for a response. This can be used to test the connectivity between two hosts and to measure the round-trip time (RTT) of a packet.
ping 8.8.8.8
ifconfig#
ifconfig is a system administration utility in Unix-like operating systems for network interface configuration.
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
wlo1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.100.102.16 netmask 255.255.255.0 broadcast 10.100.102.255
inet6 fe80::493f:baf7:5f6a:1d4c prefixlen 64 scopeid 0x20<link>
ether f4:4e:e3:a1:cc:c3 txqueuelen 1000 (Ethernet)
Models#

DHCP#

DNS#

Service#
Network service is an application called server that has service base on protocols
- Web
- zoom
Protocol#
Network protocols are a set of rules outlining how connected devices communicate across a network to exchange information.
- HTTP
- DHCP
- DNS